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Subject: [Boost-commit] svn:boost r73589 - in trunk: boost/wave libs/wave libs/wave/doc libs/wave/samples/cpp_tokens libs/wave/samples/cpp_tokens/slex
From: hartmut.kaiser_at_[hidden]
Date: 2011-08-06 21:27:32

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Author: hkaiser
Date: 2011-08-06 21:27:31 EDT (Sat, 06 Aug 2011)
New Revision: 73589
URL: http://svn.boost.org/trac/boost/changeset/73589

Log:
Wave: adding support_option_emit_contnewlines for the SLex lexer only.
Text files modified:
   trunk/boost/wave/language_support.hpp | 6 ++++--
   trunk/libs/wave/ChangeLog | 8 ++++++++
   trunk/libs/wave/doc/class_reference_context.html | 6 ++++--
   trunk/libs/wave/index.html | 4 ++--
   trunk/libs/wave/samples/cpp_tokens/cpp_tokens.cpp | 1 +
   trunk/libs/wave/samples/cpp_tokens/slex/cpp_slex_lexer.hpp | 10 ++++++----
   6 files changed, 25 insertions(+), 10 deletions(-)

Modified: trunk/boost/wave/language_support.hpp
==============================================================================
--- trunk/boost/wave/language_support.hpp (original)
+++ trunk/boost/wave/language_support.hpp 2011-08-06 21:27:31 EDT (Sat, 06 Aug 2011)
@@ -26,7 +26,7 @@
// support flags for C++98
     support_normal = 0x01,
     support_cpp = support_normal,
-
+
     support_option_long_long = 0x02,

#if BOOST_WAVE_SUPPORT_VARIADICS_PLACEMARKERS != 0
@@ -38,7 +38,8 @@
     support_cpp0x = support_option_variadics | support_option_long_long | 0x10,
#endif

- support_option_mask = 0xFF80,
+ support_option_mask = 0xFFB0,
+ support_option_emit_contnewlines = 0x0040,
     support_option_insert_whitespace = 0x0080,
     support_option_preserve_comments = 0x0100,
     support_option_no_character_validation = 0x0200,
@@ -196,6 +197,7 @@
BOOST_WAVE_OPTION(emit_pragma_directives) // support_option_emit_pragma_directives
#endif
BOOST_WAVE_OPTION(insert_whitespace) // support_option_insert_whitespace
+BOOST_WAVE_OPTION(emit_contnewlines) // support_option_emit_contnewlines

#undef BOOST_WAVE_NEED_OPTION
#undef BOOST_WAVE_ENABLE_OPTION

Modified: trunk/libs/wave/ChangeLog
==============================================================================
--- trunk/libs/wave/ChangeLog (original)
+++ trunk/libs/wave/ChangeLog 2011-08-06 21:27:31 EDT (Sat, 06 Aug 2011)
@@ -20,6 +20,14 @@

CHANGELOG

+Boost V1.48.0
+ - V2.3.1
+ - Added the flag support_option_emit_contnewlines allowing to control whether
+ backslash newline sequences are emitted by the Wave library. The default is
+ as before: these tokens will be silently ignored (after the token positions
+ have been properly updated). Note: this option is supported by the SLex lexer
+ module only.
+
Boost V1.47.0
- V2.3.0
- After preprocessing the body of any #pragma wave option() the wave tool now

Modified: trunk/libs/wave/doc/class_reference_context.html
==============================================================================
--- trunk/libs/wave/doc/class_reference_context.html (original)
+++ trunk/libs/wave/doc/class_reference_context.html 2011-08-06 21:27:31 EDT (Sat, 06 Aug 2011)
@@ -381,7 +381,8 @@
 This functions allows to specify the language mode, in which
 the <tt>Wave</tt> library should work. The possible
 language modes are defined by the enumerated type <tt>language_support</tt>:
- <pre> enum language_support { // support flags for C++98 support_normal = 0x01, support_cpp = support_normal, // support flags for C99 support_option_long_long = 0x02, support_option_variadics = 0x04, support_c99 = support_option_variadics | support_option_long_long | 0x08, // the mask for the main language settings support_option_mask = 0xFF80, // additional fine tuning of the general behavior support_option_insert_whitespace = 0x0080, support_option_preserve_comments = 0x0100, support_option_no_character_validation = 0x0200, support_option_convert_trigraphs = 0x0400, support_option_single_line = 0x0800, support_option_prefer_pp_numbers = 0x1000, support_option_emit_line_directiv
es = 0x2000, support_option_include_guard_detection = 0x4000, support_option_emit_pragma_directives = 0x8000 };</pre>
+ <pre> enum language_support { // support flags for C++98 support_normal = 0x01, support_cpp = support_normal, // support flags for C99 support_option_long_long = 0x02, support_option_variadics = 0x04, support_c99 = support_option_variadics | support_option_long_long | 0x08, // the mask for the main language settings support_option_mask = 0xFFB0, // additional fine tuning of the general behavior
+ support_option_emit_contline = 0x0040, support_option_insert_whitespace = 0x0080, support_option_preserve_comments = 0x0100, support_option_no_character_validation = 0x0200, support_option_convert_trigraphs = 0x0400, support_option_single_line = 0x0800, support_option_prefer_pp_numbers = 0x1000, support_option_emit_line_directives = 0x2000, support_option_include_guard_detection = 0x4000, support_option_emit_pragma_directives = 0x8000 };</pre>
 When used with <tt>support_option_variadics</tt> the support for variadics, placemarkers and the <tt>operator _Pragma()</tt> is enabled in normal C++ mode. When used with the <tt>support_option_long_long</tt> the support for long long suffixes is enabled in C++ mode. 
 The <tt>support_c99</tt> switches on the C99
 language support, which enables variadics, placemarkers, the <tt>operator _Pragma</tt> and long long suffixes by default. Additionally it disables the C++
@@ -444,6 +445,7 @@
 the <tt>BOOST_WAVE_EMIT_PRAGMA_DIRECTIVES</tt> is defined
 during compilation to a value not equal to zero (see here for more
 information). </li>
+ <li>If the <tt>support_option_emit_contlines</tt> flag is set, the <tt>Wave</tt> library will emit all backslash newline sequences encountered in the input. It will generate a <tt>T_CONTLINE</tt> token for each of those character sequences. Please note that this option is supported by the custom SLex lexer module only. See the cpp_tokens example for a working example.</li>
 </ul>
 If the parameter <tt>reset_macros</tt> is true the <tt>set_language</tt> function internally
 resets the list of defined macros, so please be careful not to call it
@@ -476,7 +478,7 @@

Last
 updated:
- Sunday, October 12, 2008 20:14
+ Saturday, August 6, 2011 20:22
 
 
</body>

Modified: trunk/libs/wave/index.html
==============================================================================
--- trunk/libs/wave/index.html (original)
+++ trunk/libs/wave/index.html 2011-08-06 21:27:31 EDT (Sat, 06 Aug 2011)
@@ -10,7 +10,7 @@
 <tbody>
 <tr>
 <td width="21"> </td>
- <td width="885">Wave V2.0</td>
+ <td width="885">Wave V2.3</td>
 <td width="96"></td>
 </tr>
 </tbody>
@@ -100,7 +100,7 @@
 http://www.boost.org/LICENSE_1_0.txt) 

Last updated:
- Tuesday, July 29, 2008 20:31
+ Saturday, August 6, 2011 20:16
 
</body>
</html>

Modified: trunk/libs/wave/samples/cpp_tokens/cpp_tokens.cpp
==============================================================================
--- trunk/libs/wave/samples/cpp_tokens/cpp_tokens.cpp (original)
+++ trunk/libs/wave/samples/cpp_tokens/cpp_tokens.cpp 2011-08-06 21:27:31 EDT (Sat, 06 Aug 2011)
@@ -94,6 +94,7 @@
     ctx.set_language(boost::wave::support_cpp0x);
     ctx.set_language(boost::wave::enable_preserve_comments(ctx.get_language()));
     ctx.set_language(boost::wave::enable_prefer_pp_numbers(ctx.get_language()));
+ ctx.set_language(boost::wave::enable_emit_contnewlines(ctx.get_language()));

     context_type::iterator_type first = ctx.begin();
     context_type::iterator_type last = ctx.end();

Modified: trunk/libs/wave/samples/cpp_tokens/slex/cpp_slex_lexer.hpp
==============================================================================
--- trunk/libs/wave/samples/cpp_tokens/slex/cpp_slex_lexer.hpp (original)
+++ trunk/libs/wave/samples/cpp_tokens/slex/cpp_slex_lexer.hpp 2011-08-06 21:27:31 EDT (Sat, 06 Aug 2011)
@@ -637,8 +637,10 @@
 id = T_EOF; // end of input reached

 string_type token_val(value.c_str());
-
- if (T_CONTLINE != id) {
+
+ if (boost::wave::need_emit_contnewlines(language) ||
+ T_CONTLINE != id)
+ {
 // The cast should avoid spurious warnings about missing case labels
 // for the other token ids's.
 switch (static_cast<unsigned int>(id)) {
@@ -673,7 +675,7 @@
 pos.get_line(), pos.get_column(), pos.get_file());
 }
 break;
-
+
 case T_LONGINTLIT: // supported in C99 and long_long mode
 if (!boost::wave::need_long_long(language)) {
 // syntax error: not allowed in C++ mode
@@ -706,7 +708,7 @@
 at_eof = true;
 token_val.clear();
 break;
-
+
 case T_OR_TRIGRAPH:
 case T_XOR_TRIGRAPH:
 case T_LEFTBRACE_TRIGRAPH:

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